Suppression of spurious phase shifts in an optical frequency standard

We have analyzed two types of time-domain atom-light interferometers realized by a series of beam splitting copropagating or counterpropagating laser pulses. We show how a combination of both types can be used to identify and to reduce spurious systematic phase shifts in a high-precision optical fre...

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Bibliographic Details
Published in:IEEE transactions on instrumentation and measurement 2001-04, Vol.50 (2), p.535-538
Main Authors: Trebst, T., Binnewies, T., Helmcke, J., Riehle, F.
Format: Article
Language:English
Subjects:
Acceleration
Atom lasers
Atom optics
Atomic beams
Beams (radiation)
Curvature
Frequency estimation
Interferometers
Mathematical analysis
Optical beam splitting
Optical frequency
Optical interferometry
Phase shift
Time domain analysis
Time series analysis
Wave fronts
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Summary:We have analyzed two types of time-domain atom-light interferometers realized by a series of beam splitting copropagating or counterpropagating laser pulses. We show how a combination of both types can be used to identify and to reduce spurious systematic phase shifts in a high-precision optical frequency standard. In particular, we have investigated theoretically and experimentally the influence of minute wave front curvatures and gravitational acceleration. Application of this technique to a Ca optical frequency standard leads to estimates of the relative uncertainty due to wave front curvature and gravitational acceleration of 8/spl times/10/sup -15/ and 6.5/spl times/10/sup -16/, respectively.
ISSN:0018-9456
1557-9662
DOI:10.1109/19.918185